Two brothers who owned an infamous, mobbed-up Long Island restaurant savagely beat a Little League coach after he benched one of their sons for spewing an obscenity at practice, police said yesterday.

The coach, whose name the police are withholding, had an “ongoing problem” with the 11-year-old boy being disruptive during practices of the Bellmore Lightning team on Tuesday night, said Nassau County Police Sgt. Anthony Repalone.

When he tried to discipline the kid, the boy told the 45-year-old coach to “go f- – – yourself,” said Repalone. The coach then benched the child.

The boy called his father, Frank Basile, 48, of Bellmore, owner of the formerly mobbed-up fish-and-chips eatery Hudson & McCoy in Freeport.

Repalone said Basile, along with his brother Roger, 43, rushed over to the baseball field, screaming and cursing “in a fit of rage.” The coach spotted the two men heading toward him and told the kids to move away.

That was when Frank Basile “immediately punches him, rendering him semiconscious. He and his brother start pummeling and kicking” the victim, Repalone said.

The coach’s “vision is blurred, he’s dizzy, and he suffered pain to his neck and back,” as well as a concussion, said Repalone.

Police were called, and the victim was taken to a hospital, where he was admitted overnight for treatment.

Frank Basile was arrested at the scene. Roger was arrested later at his brother’s home. They were both charged with third-degree assault – a misdemeanor – and released on desk-appearance tickets for arraignment at a later date.

The coach was released from the hospital yesterday. He refused to comment.